Added function to get a model from a file
Added schlogl and heat_shock_mass_action models to public library
Removed extraneous print statements
Support for plotting single trajectories
Merge pull request #141 from StochSS/single_trajectory

Support for plotting single trajectories
Fixed importing of models from the public library
Added the two new example models to the list that cannot be deleted from the public library
Merge pull request #140 from StochSS/new-models

New models
Merge branch 'develop' of github.com:StochSS/stochss into develop